Combined BCG and smallpox vaccination (A field trial in Rwanda).
D001500:BCG Vaccine / Q000008:administration & dosage; D002648:Child; D006801:Humans; D007223:Infant; D012432:Rwanda; D012900:Smallpox Vaccine / Q000008:administration & dosage*
D001500:BCG Vaccine; D012900:Smallpox Vaccine